“I am not sure that we can climb out of the canyon here, and, when at the top of the wall, I know enough of the country to be certain that it is a desert of rock and sand. I almost conclude to leave the river. But for years I have been contemplating this trip. To leave the exploration unfinished, to say that there is a part of the canon which I cannot explore, having already almost accomplished it, is more than I am willing to acknowledge, and I determine to go on.”
